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BADCALL is a Trojan malware variant used by the group Lazarus Group. [1]

ID: S0245
Platforms: Windows
Version: 1.0
Created: 17 October 2018
Last Modified: 17 October 2018

Techniques Used

Domain ID Name Use
Enterprise T1043 Commonly Used Port

BADCALL uses port 8000 and 443 for C2.[1]

Enterprise T1090 Connection Proxy

BADCALL functions as a proxy server between the victim and C2 server.[1]

Enterprise T1024 Custom Cryptographic Protocol

BADCALL encrypts C2 traffic using an XOR/ADD cipher and uses a FakeTLS method.[1]

Enterprise T1089 Disabling Security Tools

BADCALL disables the Windows firewall before binding to a port.[1]

Enterprise T1112 Modify Registry

BADCALL modifies the firewall Registry key SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfileGloballyOpenPorts\List.[1]

Enterprise T1082 System Information Discovery

BADCALL collects the computer name and host name on the compromised system.[1]

Enterprise T1016 System Network Configuration Discovery

BADCALL collects the network adapter information.[1]

Groups That Use This Software

ID Name References
G0032 Lazarus Group [1]